Stove-pipe damper



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NFPETERS, PHOTO-UTHOGRAPHER, WASHlNGTON, D. C.

Pateented Dec. 14,

c. B. CLARK & J. T., LAM-13311111` Stove' `Pi-pe'DzLmper.V

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' UNITED STATES YPATENT OFFICE.

CHARLES B. CLARK AND JAMES T. LAMBERT, OF DETROIT, MICHIGAN;

SAID LAMBERT ASSIGNOR TO SAID CLARK.4 y

sTovE-PIPE DAM PER".

SPECIFICATION forming part of Letters Patent No. 235,514, dated December 14, 1880. Application filed November 3, 1880. (No model.)

To all whom it may concern Be it known that we, CHARLES AB. CLARK and JAMES T. LAMBERT, both citizens of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improvements in Stove-Pipe Dampers, of which the following is a specilication.

--Our present invention relates to stove-pipe dampers provided with detachable handles; and it consists, first, in the combination, with the damper-disk having a radial socket formed by straps arranged to bridge over a slot in the disk, of the damper-spindle made in two parts, with their outer ends connected by a spring-handle; second, in the combination, with the damper-disk having a radial socket formed by straps arranged to bridge over a slot in the damper and a lug extending into the socket near the inner terminus thereof, of the damper-spindle composed of two expansible halves connected at their outer ends by a spring-handle, and formed with a notch at one or both of the inner ends of said spindle for engaging with the said lug for the purpose of retaining the spindle in the damper-disk and cause it to move in a lateral direction sufficient to hold the damper in the pipe at any desired point of adjustment, all as more fully hereinafter set forth.

In the drawings, Figure 1 is a top or plan view of the damper with its spindle connected therewith, the damper being illustrated as applied to a stove-pipe which is shown in section. Fig. 2 is a perspective view of the damper-disk. Fig. 3 shows, in perspective, the spindle detached from the damper, and Fig. 4 is a section taken transversely through the spindle on the line a: m, Fig. 3.

In the drawings, the letter A refers to the damper, which consists of a circular metallic disk, preferably of cast metal, andformed with, or having secured to, its periphery in any suitable manner one of the journals, B, which, when the damper is arranged within the stovepipe, passes through an opening in the stovepipe, as herein illustrated.

The damper isformed with a central opening, C, to admit of a moderate draft, while the dam per-faces are in horizontal planes within the stove-pipe; or, if desired, such opening may be dispensed with and the damper made somewhat smaller than the area of the stovepipe, either of these features being common in this class of dampers.

The journal D of the damper, which, as diametrically opposite to the abovementioned journal B, is formed by a slightly-contracted portion of the detachable damper-spindle E.

The radial socket e of the damper, which receives the detachable spindle, is formed by bridging over with three straps a slot extendingfrom apoint near the central opening, C, out to the periphery of the disk, these straps being cast with the damper and arranged so that the strap F at the inner, and the strap F' at the outer, terminus of the radial slot both proj'ect out from one face of the damper, while the remaining strap, G, projects out from the other face of the damper at a point about intermediate of the two straps F F. The detachable damper spindle, which ts in the socket thus formed, is composed of a split stem or spindle, E', the two halves of which are connected at their outer ends bya ring-shaped handle, E2, having sufficient elasticity to cause the halves of the stem to spring apart, as il lustrated in Fig. 3. In the outer side of each one of the inner ends of the halves of the spindle is formed a notch, I, and a lug, K, for engaging either one of these notches after the stem has been inserted into the socket, is formed at one of the points of juncture between the inner strap, F, and the disk, so as to extend into that portion of the socket which is bridged over on one side of the disk of the said strap.

It will be seen that the split spindle is llattened along two sides and rounded upon its other sides, the notches I being made to extend into one of the flattened portions of each h alf of the spindle at points upon a line taken diametrically through the spindle, so that, no matter which flattened side of the split spindle is uppermost, one of the notches will always be in proper position for the engagement of the lug therewith. The split in the spindle continues from the inner end thereof through the journal portion thereof to the handle, and between the spindle and its handle each half of the spindle is provided with a segmental ange, which flanges, when the two halves of the spindle are forced together, constitute a collar adapted to bear against the outer side of the stove-pipe, whilethe spindle is fitted to the damper.

In introducing the split spindle into the socket the halves of the spindle will be forced together until one of the notches arrives at a point opposite to the lng, and then the halves will expand so that the lug will be. received into such notch, and thereby lock the damper and the spindle together, and at the saine time bind thepipe at thejournalbearing sufficiently to hold the damper in any desired position.

To adniit of the detachment of the spindle from the damper, the sides of the notches are inclined, so that by drawing upon the spindle its halves will be brought together, so as to elect thedisengagelnent ot' the notch from the lug.

Having thus described our invention, what we claim is- 1. The combination, with the damper-disk having a radial socket formed by straps arranged to bridge over a slot in the disk, of the dalnimrspindle made in two parts, with their outer ends connected by a. spring-handle, substantially as described.

2. The combination, with the damper-disk haring a radial socket formed by straps arranged to bridge over a slot in the damper and a lug extending into the socket near the inner terminus thereof, of the damper-spindle composed of two expausible halves, connected at their outer ends by a spring-handle, and formed with a notch at one or both of the inner ends of said spindle for engaging with the said lng, substantially as described.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

CHARLES B. CLARK. JAMES T. LAMBERT.

Witnesses:

J AMEs M. WELCH, ANDREW MCLELLAN. 

